Then there’s Muru out of Australia. Their press release says “[we] transform metadata, the basic information about every digital music file, and generates extended playlists to fit every taste, every dynamic, by disrupting the way music is classified in the digital realm. With Muru, anything you can possibly think of with playlists can be controlled by your voice.

“[we] transform metadata, the basic information about every digital music file, and generates extended playlists to fit every taste, every dynamic, by disrupting the way music is classified in the digital realm. With Muru, anything you can possibly think of with playlists can be controlled by your voice.

“Today, we can say ‘Play me some Jazz,’ but with Muru you could say: ‘Play me some Jazz for an hour, starting with something like Billie Holiday and ending with Miles Davis’…then half way through the playlist you can say, ‘Bring the tempo down and play me more songs that I know.’ Or “I’m having a dinner party. Start with “chill out” and end with my favourite Michael Jackson song in 3 hours.'”

Coooool.

Another program that promises to help is Loudr, which provides all the back end metadata for voice service. If you want to browse for songs by, say, composer, a device will search the Loudr database to find what you’re looking for.